Hi,
Here in Europe we already have around 25% rape-seed oil in our diesel fuel, my 1986 F-250 has no conversion and burns it Ok.

I have been told to watch out for leaks at the o-rings as they dry up faster with bio-diesel. The truck has been running on it since 1998 and no leaks so far, hope it lasts, the only noticable difference is the odor of the smoke !!

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